NC0081621_NOV-2018-PC-0259_20180720

Wa ter Resources
ENWROMMEMTAL QUALITY
Certified Mail # 7016 1370 0000 2596 0917
Return Receipt Requested
July 20, 2018
Mark Fowler, Facilities Director
Water and Sewer Authority of Cabarrus County
6400 Breezy Lane
Concord, NC 28025
SUBJECT: NOTICE OF VIOLATION
Tracking Number: NOV-2018-PC-0259
Permit No. NCO081621
Muddy Creek WWTP
Cabarrus County
Dear Mr. Fowler:
ROY COOPER
Ga versa,
A IIHAEL S- REGAN
Secre��
LINDA GIMPEPPER
AiPi' m DsreCia-
The North Carolina Division of Water Resources conducted an inspection of the Muddy Creek WWTP on July 12,
2018. This inspection was conducted to verify that the facility is operating in compliance with the conditions and
limitations specified in NPDES WW Permit No. NC0081621. A summary of the findings and comments noted
during the inspection are provided in the enclosed copy of the inspection report.
The Compliance Evaluation inspection was conducted by Division of Water Resources staff from the Mooresville
Regional Office and Raleigh Complex Permitting Unit. The following violation(s) were noted during the inspection:
Inspection Area Description of Violation
Influent Sampling It was noted in the previous inspection, conducted on August 8, 2017, that influent
sampler is not located above all side streams of wastewater such as filter backwash water
and sludge dewatering supernatant. Such side streams can skew influent analytical
values and miss represent treatment plant loading and removal rates.
Please note that in accordance with your current NPDES Permit #NC0081621, Part I, Section A (1), Footnotes (3.)
"The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent values (85% removal)." Also in accordance with 15A NCAC 2B .0505 (2) Establishment of
Sampling Points, (A) "Sampling points as required in Rule .0508 of this Section shall be established for collecting
influent and effluent samples for each facility." Samples collected should be representative of the waste stream
being sampled.
State of North Carolina I Environmental Quality I Water Resources
610 East Center Avenue, Suite 301, Mooresville, NC 28115
704-663-1699

Remedial actions should have already been taken to correct this problem and prevent further occurrences in the
future. The Division of Water Resources may pursue enforcement action for this and any additional violations of
State law. To prevent further action, please respond in writing to this office within 30 days upon your receipt of
this Notice of Violation regarding your plans or measures to be taken to address the indicated violations and other
identified issues, if applicable.
If you should have any questions, please do not hesitate to contact Roberto Scheller with the Water Quality
Regional Operations Section in the Mooresville Regional Office at 704-663-1699.
Sincerely,
DocuSigned by:
A"4" H P
F161 FB69A2D84A3...
for
W. Corey Basinger, Regional Supervisor
Water Quality Regional Operations Section
Mooresville Regional Office
Division of Water Resources, NCDEQ
ATTACHMENTS
Cc: WQS Mooresville Regional Office - Enforcement File
NPDES Compliance/Enforcement Unit - Enforcement File
State of North Carolina I Environmental Quality I Water Resources
610 East Center Avenue, Suite 301, Mooresville, NC 28115
704-663-1699